National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

58°F

14°C

Humidity 81%
Wind Speed NE 9 mph
Barometer 30.11 in (1019.2 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 14 Nov 8:56 am CST
Extended Forecast for

Lockhart TX

  • Today

    Today: A 20 percent chance of showers after 3pm. Partly sunny, with a high near 69. East southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 69 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Showers likely, then showers and thunderstorms after midnight. Low around 56. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers
    Likely then
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms. High near 66. East southeast wind 5 to 15 mph becoming north in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 66 °F

    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before midnight. Mostly cloudy, with a low around 48. North northeast wind around 15 mph, with gusts as high as 30 mph.

    Low: 48 °F

    Chance
    Showers then
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 57. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 57 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. East northeast wind around 5 mph.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. East northeast wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68. Northeast wind around 5 mph.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 3pm. Partly sunny, with a high near 69. East southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Showers likely, then showers and thunderstorms after midnight. Low around 56. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms. High near 66. East southeast wind 5 to 15 mph becoming north in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
A 40 percent chance of showers before midnight. Mostly cloudy, with a low around 48. North northeast wind around 15 mph, with gusts as high as 30 mph.
Monday
Mostly cloudy, with a high near 57. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 48. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 63. East northeast wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 52. East northeast wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 68. Northeast wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 61.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 71.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
7:42 am CST Nov 14, 2026
Forecast Valid:
9am CST Nov 14, 2026-6pm CST Nov 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation